Buzzing Monitor/Cassiopeia tweeter ribbon

[DeWas]

What could cause the ribbon tweeter of Cassiopeia speakers (same as Ribbon Monitor tweeter) buzz? Both sides buzz about the same amount. Solutions? Thanks for your help!

[Graz]

As they get older they stretch, and the ribbon flutters against the angle sections front and back. You can extend the life by replacing the foam sometimes. To access extract, remove the front plastic face (4 bolts - careful they are fragile fronts), and CAREFULLY remove the angle sides, one at a time. I normally slide a piece of plastic in the gap to the extreme side (not touching the ribbon) before undoing the bolts. Once in, replace the foam at the sides, it's probably dust.

Take care - Graz